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SF MARATHON 1ST HALF 2025

Jeffrey Tsai

Bib: 17023•M•Age: 35

Santa Clara, CA

0:00
0:00
/ mi
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Overall
#0 / 7100
Gender (Male)
#0 / 3977
Division (M35-39)
#0 / 583
Race Day Weather
56°/46°F
light rain

⏱️ Race Timeline

Start
0:00:00
Race begins
1.81M
19:15
Rank: #5159
Start → 1.81M
19:15 | 10:38/mi
5.34M
1:03:23
Rank: #6132 (-973)
1.81M → 5.34M
44:08 | 12:30/mi
6.15M
1:13:39
Rank: #6096 (+36)
5.34M → 6.15M
10:16 | 12:41/mi
10.54M
2:07:47
Rank: #5917 (+179)
6.15M → 10.54M
54:08 | 12:20/mi
11.05M
2:15:46
Rank: #5817 (+100)
10.54M → 11.05M
7:59 | 15:39/mi
Finish· 13.11 mi
2:40:02
Rank: #5639 (+178)
11.05M → Finish
24:16 | 11:47/mi

The Course

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Half Splits

1st Half· via 6.15MFaster
Distance6.15 mi
Time1:13:39
Pace11:59 /mi
2nd Half
Distance6.96 mi
Time1:26:23
Pace12:25 /mi
📊Positive Split: 17.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi07:00:0319:1510:3819:15
10:38
-
5.34M
5.34 mi07:44:111:03:2311:5244:08
12:30
+1:52
6.15M
6.15 mi07:54:271:13:3911:5910:16
12:41
+0:11
10.54M
10.54 mi08:48:352:07:4712:0754:08
12:20
-0:21
11.05M
11.05 mi08:56:342:15:4612:177:59
15:39
+3:19
Finish
13.11 mi09:20:502:40:0212:1224:16
11:47
-3:52

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

10:38 /mi

Average Pace

12:12 /mi

Slowest Pace

15:39 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:15

12% of race

Time at Steady Pace

2:12:48

83% of race

Time at Slower Pace

7:59

5% of race

Average Pace: 12:12 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
1.81M
1.81 mi07:00:0319:1510:3819:15
10:38
#5159
5.34M
5.34 mi07:44:111:03:2311:5244:08
12:30
#6132
6.15M
6.15 mi07:54:271:13:3911:5910:16
12:41
#6096
10.54M
10.54 mi08:48:352:07:4712:0754:08
12:20
#5917
11.05M
11.05 mi08:56:342:15:4612:177:59
15:39
#5817
Finish
13.11 mi09:20:502:40:0212:1224:16
11:47
#5639
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
1.81M1.81 mi1.81 mi515931724625159(Top 73%)3172(Top 80%)462(Top 79%)
5.34M5.34 mi3.53 mi6132-9733603-431524-626392(Top 90%)3710(Top 93%)538(Top 92%)
6.15M6.15 mi0.81 mi6096+363579+24521+35769(Top 81%)3444(Top 87%)506(Top 87%)
10.54M10.54 mi4.39 mi5917+1793489+90506+155683(Top 80%)3376(Top 85%)491(Top 84%)
11.05M11.05 mi0.51 mi5817+1003446+43500+64375(Top 62%)2729(Top 69%)399(Top 68%)
Finish13.11 mi2.06 mi5639+1783350+96483+174738(Top 67%)2862(Top 72%)415(Top 71%)

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 73%
~flat
+4ft-3ft

Overall

5159

Males

3172

M35-39

462

1.81M→5.34M

1.8 - 5.3 mi

Top 90%
×4stories
+80ft-74ft

Overall

6392

Males

3710

M35-39

538

5.34M→6.15M

5.3 - 6.2 mi

Top 81%
×10stories
+126ft-4ft

Overall

5769

Males

3444

M35-39

506

6.15M→10.54M

6.2 - 10.5 mi

Top 80%
×21stories
+230ft-361ft

Overall

5683

Males

3376

M35-39

491

10.54M→11.05M

10.5 - 11.1 mi

Top 62%
×14stories
+172ft-0ft

Overall

4375

Males

2729

M35-39

399

11.05M→Finish

11.1 - 13.1 mi

Top 67%
×7stories
+97ft-114ft

Overall

4738

Males

2862

M35-39

415

Passing Analysis

Category:
Athletes Passed
631*
Passed By
1111
Net Change
-480
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#5159
1.81M → 5.34M31*1004-973#5159#6132
5.34M → 6.15M6226+36#6132#6096
6.15M → 10.54M244*65+179#6096#5917
10.54M → 11.05M1022+100#5917#5817
11.05M → Finish192*14+178#5817#5639
TOTALS631*1111-480

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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